Where can I see jobs that are no longer open?

On the past jobs archive. It lists everything that has rolled off the front page — closed, expired, or simply published more than 60 days ago — newest first, and you can search and filter it the same way as the home page. A few of the newer ones may still be open, so check the listing.

It is worth a look even when you are job hunting today: it shows which companies have hired Django developers over the years and what they were hiring for.